/*  DirList.java
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.liang.agile.io;

import java.io.File;
import java.io.FilenameFilter;
import java.util.Arrays;
import java.util.regex.Pattern;

public class DirList {

    public static void main(final String[] args) {
        File path = new File(".");
        String[] list;
        if (args.length == 0) {
            list = path.list();
        } else {
            list = path.list(new FilenameFilter() {
                private Pattern pattern = Pattern.compile(args[0]);

                @Override
                public boolean accept(File dir, String name) {
                    return pattern.matcher(name).matches();
                }
            });
        }
        Arrays.sort(list, String.CASE_INSENSITIVE_ORDER);
        for(String diritem : list){
            System.out.println(diritem);
        }
        
    }
}
